DE3246512A1 - KNITTING MACHINE - Google Patents

Description

Memminger GmbH, Wittlensweiler Strasse 12, 7290 Freudenstadt

Knitting machine

The invention relates to a knitting machine with at least one needle carrier that is next to each other fitted needles that are horizontally displaceable and controlled by a needle lock cam is and on which is arranged between the needles / movable in the longitudinal direction of the needles and transversely thereto Inclusion and cut-off sinkers are stored, their longitudinal and transverse movement through separate, assigned board control curve surfaces is controlled.

From DE-OS 31 08 041 a high-performance circular knitting machine is known, the needle cylinder in addition to the latch needles is equipped with enclosing and knock-off sinkers, which during the pull-in movement of the needles is given an expulsion movement in the opposite direction can, in order to facilitate and improve the knitting process and the knitting machine to make it more efficient overall. In addition to this expulsion and retraction movement the containment and knock-off sinkers with their containment nose, which is limited by this Enclosing throat and the connecting edge carrying head a movement directed transversely to the needles execute to enclose the fabric during the needle ejection and to enclose it during the needle retraction to be able to release again for the Kulieron,

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The longitudinal movement of the containment and knockdown sinkers is generated in that the sinkers with one at the end of its elongated shaft located between adjacent needle shafts arranged foot engage in a sinker lock channel formed in the lock casing, which executes a movement relative to the needle cylinder in a known manner. To the generation the transverse movement is a sinker drive lock on the needle cylinder near the edge of the needle cylinder provided in the form of a circumferential inclined surface on which each of the Enclosing and knock-off sinkers in the course of the expulsion movement with one on their shaft the foot opposite arranged control projection runs up. This will make the inclusion and knock-off plate in the further course of its expulsion movement around its lower shaft end tilted outwards, with the whole shaft acting as a one-armed lever on which a short one Shank piece of the sinker head is seated.

This knitting machine is characterized by a very simple construction of the control device for the containment and tee sinkers. But it must be for the inclined surface of the plate drive lock Special precautions are taken to avoid excessive wear and tear to prevent or to provide an interchangeability of the corresponding parts of the needle cylinder. In addition, the transverse movement of the containment and sinker sinkers can not be independent of the Longitudinal movement of the sinker can be controlled, as is desired for some applications were.

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A control of the transverse movement of the containment and knock-off sinkers independent of the longitudinal movement such a circular knitting machine is from US-PS 2090 500, as well as from one the DE-OS 20 25 144 known circular knitting machine possible. In the first-mentioned circular knitting machine are the containment and knock-off sinkers that protrude between the needles mounted on the needle cylinder but not on the needle cylinder, but in the dial, with the sinker longitudinal movement via a control slide mounted on the needle cylinder through a control slide provided in the lock jacket Sinker lock curve is generated, while a dedicated sinker lock is used to generate the transverse movement on the dial is required. This requires a great manufacturing effort, which already is not portable for a single-front circular knitting machine for reasons of cost.

Basically the same also applies to the second-mentioned known circular knitting machine, which because of the special design and storage of your containment and tee sinkers control cam surfaces that are still very complicated and difficult to manufacture are associated with the needle cylinder Makes sinker lock parts required.

The object of the invention is therefore to create a knitting machine of the type mentioned above, which is characterized by the fact that, on the one hand, it has a separate influence on the longitudinal and transverse movement the containment and knockdown sinkers and, on the other hand, a simple structure which has board control devices,

so that they are with high operational safety and
good serviceability is cheap to manufacture and it allows to achieve a high operating speed.

To solve this problem, the knitting machine according to the invention is characterized in that each of the containment and knock-off sinkers has a shaft designed as a two-armed lever which is attached to the needle carrier at a pivot bearing point with a transverse pivot axis
is supported, and that on both sides of the pivot bearing point two plate control curve surfaces each acting on one of the lever arms
are provided, of which one of them
in one direction and one from the other
in the opposite direction facing transverse movement of the head of the containment and knockdown sinker can be generated.

In that the containment and knock-off sinkers, which are guided in a longitudinally displaceable manner on the needle carrier, are mounted on the needle carrier at the pivot bearing point
is pivotably mounted, there are very simple structural conditions for the arrangement of the board control curve surfaces. The entire control mechanism of the containment and cut-off sinkers can namely be arranged in the area of the needle carrier without requiring a significantly increased space requirement or complicated movement deflections via slides and the like. The control of the longitudinal and the transverse movement of the inclusion and cut-off sinkers is carried out separately, so that both movements for

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can be adjusted appropriately. The pivot points of the sinker shafts the needle carrier are not subject to any particular wear, so that as a rule none additional precautions must be taken.

In a preferred embodiment, the Knitting machine at least one generating the longitudinal movement of the enclosing sinkers and sinkers, the needle carrier associated sinker lock channel into which the containment and sinker sinkers each engage with a foot arranged on their shaft. The pivot bearing point for the individual inclusion and tee sinkers can in principle be replaced by a corresponding Increase, for example in the form of a bearing edge or the like. On which the inclusion and sinkers facing side of the needle carrier be formed, but arise particularly simple ratios, if on the shaft of each containment or cut-off plate a swivel bearing point forming bearing projection is arranged, for example a substantially triangular Has cross-sectional shape. This bearing projection is advantageously on the one facing away from the foot Side of the shaft arranged, it is useful if the foot on the shaft on the same Height as the bearing projection is intended. This means that the foot can be kept relatively short, because during the pivoting movement of the associated sinker shaft, it does not stop the longitudinal movement the sinker lock channel producing the containment and knockdown sinker is moved out.

To ensure that the shafts of the containment and knock-off sinkers are securely in contact with their transverse movement

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to ensure controlling board control curve surfaces and in particular to ensure that the sinkers are in their respective end positions Transverse movement and here in particular safely return to the basic position in which the locking nose releases the goods, it is advantageous if the inclusion and cut-off sinkers by a spring force acting on one of their lever arms in the direction of an end position their transverse movement are biased too elastically. In addition, when training the knitting machine as a circular knitting machine on the Sink head facing away from the lever arm of the shafts of the enclosing sinkers and sinkers one rings be placed around the needle cylinder forming the needle cylinder running endless wreath spring by holding elements on the shafts and / or the needle cylinder and / or one of the needle cylinders surrounding lock jacket is held captive.

Very simple structural conditions arise when the two plate control curves that generate the transverse movement laugh are each formed on sinker lock parts, which are opposite to the needle carrier arranged lock carrier are arranged. At least one of the two sinker lock parts on the shafts of the inclusion and cut-off sinkers to and away from these adjustable in the Lock carrier be stored in order to allow the transverse movement dor inclusion and cut-off sinkers and thus also to be able to adjust the containment position accordingly. The adjustable sinker lock part can be formed by a slidably mounted control slide in the lock carrier, the one

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externally actuatable adjusting device is assigned. It is useful if the the longitudinal movement of the containment and knockdown sinkers causing sinker lock channel in one between the two sinker lock parts, arranged on the lock carrier, sinker lock elements is formed, which can be adjustably mounted on the lock carrier in the longitudinal direction of the needle can, so that the maximum spout height and the lowest withdrawal position of the containment and sinkers can be adjusted accordingly. In addition, it is advantageous if that Sinker lock element is seated on an elongated support part which is longitudinally displaceable in the lock carrier, which is displaceable by an externally actuated adjusting device.

This adjusting device can have an actuator rotatably mounted in the lock carrier, which over a tenon / slot connection with the control slide or support part is coupled.

The needle lock channel controlling the needles can also be arranged on the lock carrier, see above that additional support elements are not necessary.

Finally, the containment and sinker sinkers with their shafts in grooves of the needle carrier longitudinally displaceable and pivotable to a limited extent be stored, the arrangement can be made such that the needles with their shafts on the webs located between the grooves are mounted to be longitudinally displaceable. These webs can

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then one defining the basic position of the needles Have stop.

The knitting machine can be designed both as a flat knitting machine and as a circular knitting machine. The needle carrier forms in one case the needle bed of the flat knitting machine, while in the other case it is through the needle cylinder and / or the dial of the circular knitting machine is formed.

In the drawing, exemplary embodiments of the subject matter of the invention are shown. Show it:

Fig. 1 shows the needle cylinder and the lock jacket of a circular knitting machine according to the invention, in Longitudinal section, in a side view and in a simplified representation,

FIG. 2 shows the arrangement according to FIG. 1, in a modified embodiment and in one corresponding representation,

3 shows the needle cylinder according to FIG. 1 or 2, sectioned along line 3-3 in FIG. 1 or Fig. 2, in a plan view, in detail and on a different scale, and

4 shows the needle cylinder according to FIG. 1, in a longitudinal section, in a detail and in one Rare view.

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The needle cylinder of a circular knitting machine shown in Fig. 1 box 1 is on its outer peripheral surface with parallel, lengthways Milled grooves 2 provided, in which inclusion and cut-off sinkers 3 can be longitudinally displaced and are mounted with their shafts 4 so that they can pivot to a limited extent. The inclusion and sinkers 3 are each arranged alternately with latch needles 5 and wear on their The shaft has a foot 6 on each side facing away from the needle cylinder 1. It closes on the shaft 4 with each containment and tee plate 3, a plate head 7, which has a containment nose 8, one of this limited confinement throat 9 and and has a Kulierkante 10, which at a over the needle cylinder rim 11 protruding part 12 is formed.

As can be seen from Fig. 3, each of the containment and knock-off sinkers 3 is with its shaft 4 with play guided in the associated groove 2 of the needle cylinder 1, while the latch needles 5 each between two adjacent enclosing and knock-off sinkers lying on the webs delimited by two grooves 2 directly on the outer peripheral surface of the needle cylinder 1 are mounted longitudinally displaceable. The latch needles 5 are thus through the inclusion and sinkers 3 guided laterally; they have a certain shape due to the curvature of the needle cylinder conditional side play, which has a favorable effect on their ease of movement, without the accuracy of the stitch formation to affect. .

The webs 12 can be seen in FIG. 4 One recess 13 each

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have, on the basis of which the associated latch needle 5 is slidably mounted and through the a shoulder 14 is formed which forms a stop for the associated latch needle 5 and their basic or discount position is defined.

Each latch needle carries at the lower end of its shaft 15 a control foot 16, which is in a associated needle lock channel 17 engages. The needle exit movement is known in Way by a relative rotary movement between the needle cylinder 1 and the needle lock channel 17 evoked.

The shaft 4 of each of the containment and knockdown sinkers 3 is in the form of a two-armed lever formed with two lever arms 16 and 17, between the two lever arms 16,17 on the shaft on the side opposite the foot 6, a bearing projection with an approximately triangular cross-section is molded. The bearing projection 18 is at the same height as the opposite foot 6 (see FIG. 1) and is supported on the needle carrier 1 via the bottom of the associated groove 2.

In the webs 12 of the needle cylinder 1 is in the area the lower end of the lower lever arms 17 of the sinker shafts 4 each have a recess 19 incorporated (Fig. 1, 4), the for a placed on the lower lever arms 17 at this point, all around the needle cylinder 1 running endless Kranzfoder 20 space. The wreath spring 20 tensions the containment and cut-off sinkers 3 elastically into an end position shown in FIG. 2, in which the sinker head 7 is lifted radially from the needle cylinder 1 and thus no further

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shown, otherwise enclosed by the locking nose 8 goods is released. The rim spring 20 holds the containment and knockdown sinkers together if for maintenance or retrofitting purposes a lock segment yet to be described is removed; it also serves as a stop and Counter-guide for the containment and knockdown sinkers 3, if these are controlled radially inward in a manner that is also still to be explained will.

The shoulder 14 on the webs 12 also helps to facilitate the reinsertion of lock segments, For example, after changing the needle, and also simplifies insertion and replacement the latch needles 5.

Two wreath springs 21 hold the latch needles 5 with their shafts 15 on the webs 12 in plant. The wreath springs 21 are also endless; they run around the needle cylinder 1.

At some radial distance, the needle cylinder 1 is surrounded by a frame ring 22 on which a lock carrier is attached in the form of a composite of several rings lock shell 23. The lock jacket 23 consists in a known manner of individual segments that each Knitting systems of the circular knitting machine are assigned and which are individually removed from the frame ring 22 can be. The segment of the lock jacket 23 shown in longitudinal section in FIG. 1 has a bore 24 running parallel to the needle cylinder 1, into which a support part forming bolt 25 is inserted displaceably,

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which carries a sinker lock element 26, which through a recess 27 of the lock shell 23 to the outside protrudes and in which a sinker cam 28 is formed, which with the feet 6 of the inclusion and knockdown sinkers 3 cooperate in the sense that they include the inclusion und.Abschlagplatinen 3 their longitudinal movement, i.e. the expulsion and retraction movement. The sinker lock element 26 can be adjusted in height by an adjusting device that consists of one in one corresponding bore of the lock jacket 23 rotatably mounted, a key extension 31 having Washer 30 and a tenon / slot connection with the bolt 25 consists. These The tenon / slot connection has a tenon 32 inserted transversely into the bolt 25 which engages in a spiral-shaped control groove 33 on the inside of the disk 30. By Turning the disk 30 so that the bolt 25 and the sinker lock element 26 are adjusted in height.

The sinker lock element 26 is between two on both sides of the pivot bearing point at 18 on the Lock jacket 23 mounted plate control curve surfaces 3 4.35 arranged, of which the cam surface 34 on a slide 36 and the Cam surface 35 are formed on a cam part 37. The two control cam surfaces 34,35 are used to generate the transverse movement of the sinker head 7 in such a way that through the upper control curve surface 34 the inclusion and knock-off sinkers 3 in the containment position on the needle cylinder 1 and they through the cam surface 35 from the enclosed position of the needle cylinder 1 wec7 - in each case transversely to the Latch needles 5 - are moved.

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The slide 36 is in a groove 38 of the lock shell 23 mounted displaceably transversely to the needle cylinder axis. It is in the radial direction adjustable by an adjusting device, which also has an inserted into an associated bore Has disk 39, the key approach is indicated at 40 and which has a Pin / slot connection 41, 42, similar to 32, 33, is coupled to the slide 36.

In principle, it would be conceivable to also use the other board control curve surface 35 on a similar one To arrange the slide 3 6 and thus in the radial direction with respect to the sinker shafts 4 to make adjustable.

For example, for the production of smooth goods, the slide 36 can be dispensed with, i. E. the upper cam surface 34 can also be fixed. Particularly permitted when processing sensitive yarns But it is the adjustability of the cam surface 34 brought about by the slide 36, the Expand the area of application of the knitting machine.

Finally, on the lock jacket 23, there is still another one between the two control cam surfaces 34, 35 the needle lock channel 17 containing needle lock part 4 5 is arranged.

During the relative movement between the needle cylinder 1 and the lock jacket 23 are not only the latch needles 5 driven out and retracted in accordance with the needle lock curve 17, but also the containment and knockdown sinkers 3 in one with the latch needles 5 equal or opposite to these

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Longitudinal movement and a transverse movement with respect to latch needles 5 are controlled. The control the longitudinal movement takes place, as already explained, via the adjustable sinker lock element 26 the sinker lock channel 28. Separated from this is the transverse movement in the form of a limited tilting movement through the two board control curve surfaces 34,35 generated, of which at least one (34) independent of the sinker lock element is radially adjustable. In Fig. 1 are the containment position of the containment and knockdown sinkers 3 and the basic or cut-off position of the latch needle 5 shown. Fig. 2 shows a simplified embodiment in which the sinker lock element 26 and the Slide 3 6 are not adjustable. In it are the inclusion and cut-off plates shown in the driven out position releasing the goods and the latch needle 5 approximately in the locked position illustrated.

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L e θ r s e i t θ

Claims (18)

Vfcteiifanwälfe * DrMng. R. Rüger Dipl.-Ing. H. P. Barthelt / ugel. Representative at the European Patent Office Webergasse 3 - Postfach 348 · 7300 Esslingen (Neckar) P 32 46 512.2-26 June 23, 1983 Memminger GmbH PA 33 rüal Tele <° n-Stuttgart ANR: 1035517 «τ, υ» »» -, Telex patent claims ToleflramraPatonischuK L tsslingenrveckar tsslingenrveckar 1. Knitting machine with at least one needle carrier, the one with juxtaposed, longitudinally displaceable and is equipped with needles controlled by a needle lock cam, and on the one between the needles arranged, in the longitudinal direction of the needles and transversely movable enclosing and knock-off sinkers are stored, their longitudinal and transverse movement by separate, assigned plate control curve surfaces is controlled, characterized in that each of the containment and cut-off sinkers (3) is a two-armed Lever formed shaft (4) has, which at a pivot bearing point (at 18) with transverse extending pivot axis is supported on the needle carrier (1), and that on both sides of the pivot bearing point (at 18) two plate control cam surfaces each acting on one of the lever arms (16; 17) (34,35) are provided, of which one in one direction and one in the other in the opposite direction facing transverse movement of the head (7) of the containment and cut-off plate (3) can be generated. 2. Knitting machine according to claim 1, characterized in that it has at least one of the longitudinal movement of the enclosing and sinker (3) generating sinker channel associated with the needle carrier (1) (28), in which the containment and cut-off sinkers (3) each with a on their shaft (4) engage arranged foot (6). 3. Knitting machine according to claim 1 or 2, characterized in that on the shaft (4) each Enclosure and cut-off plate (3) a bearing projection forming the pivot bearing point (18) is arranged. 4. Knitting machine according to claims 2 and 3, characterized in that the bearing projection (18) is arranged on the side of the shaft (4) facing away from the foot (6). 5. Knitting machine according to claim 4, characterized in that that the foot (6) on the shaft (4) is at the same height as the bearing projection (18) is arranged. 6. Knitting machine according to one of the preceding claims, characterized in that the Locking and knock-off sinkers (3) by one on each of their lever arms (16 or 17) acting spring force in the direction of an end position of their transverse movement is elastically biased. 7. Knitting machine according to claim 6, characterized in that that in their training as a circular knitting machine on the lever arm (17) of the shafts (4) facing away from the sinker head (7) of the containment and knock-off sinkers (3) one around the needle cylinder forming the needle carrier (1) running endless wreath spring (20) is attached by holding elements (19) on the shafts (4) and / or the needle cylinder (1) and / or one of the needle cylinders (1) surrounding lock casing (23) are held captive. BATH ORIGINAL 8. Knitting machine according to one of the preceding claims, characterized in that the two sinker control cam surfaces (34, 35) generating the transverse movement, each on sinker lock parts (36,37) which are arranged on a lock carrier (23) arranged opposite the needle carrier (1). 9. Knitting machine according to claim 8, characterized in that at least one (36) of the two Sinker lock parts (36,37) on the shafts (4) of the enclosing and knockdown sinkers (3) and is mounted displaceably away from these in the lock carrier (23). 10. Knitting machine according to claim 9, characterized in that the adjustable sinker lock part formed by a slide (36) displaceably mounted in the lock carrier (23) is to which an externally actuatable adjusting device (39,40,41) is assigned. 11. Knitting machine according to claims 2 and 8, characterized in that the sinker lock channel (28) in a between the two sinker lock parts (36,37) on the lock carrier (23) arranged sinker lock element (26) is formed. 12. Knitting machine according to claim 11, characterized in that the sinker lock element (26) on the lock carrier (23) is mounted adjustably in the longitudinal direction of the needle. 13. Knitting machine according to claim 12, characterized in that the sinker lock element (26) on one in the lock carrier (23) longitudinally displaceable elongated support part (25) is seated, which is supported by one of externally actuatable adjusting device (30, 32, 33) is displaceable. 14. Knitting machine according to claim 10 or 13, characterized in that the adjusting device is an in the lock carrier (23) rotatably mounted actuator (30; 39) which via a pin / Slot connection (3 2.33; 4 2.41) with the slide (36) or the support part (25) is coupled. 15. Knitting machine according to one of claims 8 to 14, characterized by that on the lock carrier (23) the needle lock channel (17) is also arranged. 16. Knitting machine according to one of the preceding claims, characterized in that the enclosing and knock-off sinkers (3) with their shafts (4) in grooves (2) of the needle carrier (1) longitudinally displaceable and limited are pivotably mounted. 17. Knitting machine according to claim 16, characterized in that the needles (5) with their shafts (15) on the between the grooves (2) located webs (12) are displaceably mounted. 18. Knitting machine according to claim 17, characterized in that that the webs (12) a basic position of the needles (5) have defining stop (14). «BAD ORIGINAL